CentOS7上以rpm方式安裝JDK8

更新時間：2020年02月10日 14:41:34 作者：小魚愛小蝦

這篇文章主要介紹了CentOS7上以rpm方式安裝JDK8,需要的朋友可以參考下

CentOS 7 安裝成功后可能已經(jīng)默認安裝了OpenJDK的JRE，但平時進行JAVA開發(fā)時需要用完整的JDK，所以為了避免以后不必要的麻煩，在此卸載了OpenJDK的JRE，并重新安裝了Oracle的JDK8

1.安裝說明

系統(tǒng)環(huán)境：CentOS 7

安裝方式：rpm

2.檢查系統(tǒng)原安裝版本

[hadoop@centos7-1 ~]$ java -version
OpenJDK Version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-b12)
OpenJDK 64-Bit Server VM (build 25.131-b12, mixed mode)

[hadoop@centos7-1 ~]$ rpm -qa|grep java
libvirt-java-devel-0.4.9-4.el7.noarch
tzdata-java-2017b-1.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64
libvirt-java-0.4.9-4.el7.noarch
javapackages-tools-3.4.1-11.el7.noarch
java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64
java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
python-javapackages-3.4.1-11.el7.noarch
[hadoop@centos7-1 ~]$

3.卸載系統(tǒng)已安裝的openjdk

libvirt-java-devel-0.4.9-4.el7.noarch
libvirt-java-0.4.9-4.el7.noarch
tzdata-java-2017b-1.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64
java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64
java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64

以root身份運行以下命令

[root@centos7-1 hadoop]# rpm -e --nodeps libvirt-java-devel-0.4.9-4.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps libvirt-java-0.4.9-4.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps tzdata-java-2017b-1.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64

4.安裝jdk

[root@centos7-1 local]# ll /usr/local/jdk-8u131-linux-x64.rpm 
 -rw-r--r--. 1 root root 169983496 6月 12 23:17 /usr/local/jdk-8u131-linux-x64.rpm
[root@centos7-1 local]# rpm -ivh jdk-8u131-linux-x64.rpm 
 Preparing...             ################################# [100%]
 Updating / installing...
  1:jdk1.8.0_131-2000:1.8.0_131-fcs ################################# [100%]
 Unpacking JAR files...
  tools.jar...
  plugin.jar...
  javaws.jar...
  deploy.jar...
  rt.jar...
  jsse.jar...
  charsets.jar...
  localedata.jar...
[root@centos7-1 local]#

jdk默認安裝到了 /usr/java/ 下面

[root@centos7-1 local]# ll /usr/java/
total 0
lrwxrwxrwx. 1 root root 16 6月 12 23:18 default -> /usr/java/latest
drwxr-xr-x. 9 root root 268 6月 12 23:18 jdk1.8.0_131
lrwxrwxrwx. 1 root root 22 6月 12 23:18 latest -> /usr/java/jdk1.8.0_131
[root@centos7-1 local]#

5.驗證安裝

[root@centos7-1 local]# ll /usr/bin/java
lrwxrwxrwx. 1 root root 22 6月 12 23:18 /usr/bin/java -> /etc/alternatives/java
[root@centos7-1 local]# ll /etc/alternatives/java
lrwxrwxrwx. 1 root root 35 6月 12 23:18 /etc/alternatives/java -> /usr/java/jdk1.8.0_131/jre/bin/java
[root@centos7-1 local]# java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
[root@centos7-1 local]#

6.配置環(huán)境變量

[hadoop@centos7-1 ~]$ whoami
hadoop
[hadoop@centos7-1 ~]$ vi ~/.bashrc

設(shè)置JAVA_HOME，并將它加到PATH中

JAVA_HOME=/usr/java/default
PATH=$PATH:$JAVA_HOME/bin
export JAVA_HOME PATH

運行source命令，使修改生效。輸出JAVA_HOME, PATH確認修改是否生效。

[hadoop@centos7-1 ~]$ source ~/.bashrc
[hadoop@centos7-1 ~]$ echo $JAVA_HOME
/usr/java/default
[hadoop@centos7-1 ~]$ echo $PATH
/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:/home/hadoop/.local/bin:/home/hadoop/bin:/usr/java/default/bin

至此，CentOS 7上安裝JDK8順利完畢，更多關(guān)于linux下安裝JDK的文章請查看下面相關(guān)鏈接

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